Anomalous systemic arterial supply to the left lung base without sequestration.

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Congenital Anomalies

Background:

• Sequestration lung disease encompasses rare congenital anomalies of lung development.
• Anomalous systemic arterial supply to the lung is a recognized subtype.

Observation:

• A young man presented with recurrent haemoptysis.
• Imaging revealed a normal left lower lobe with systemic arterial supply from the descending thoracic aorta.
• There was a complete absence of pulmonary arterial supply to this lobe.

Findings:

• The patient had a rare congenital anomaly: systemic arterial supply to the basal segment of the left lower lobe without pulmonary arterial supply.
• This condition is part of the spectrum of sequestration lung disease.

Implications:

• This case highlights the importance of considering rare vascular anomalies in patients with recurrent haemoptysis.
• Surgical intervention, such as left lower lobectomy, can be curative for this condition.
• Accurate diagnosis through imaging is crucial for appropriate management.